Dell EMC VxFlex Ready Node User Manual page 352
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Also See for EMC VxFlex Ready Node:
- Operating system installation manual (74 pages) ,
- Operating system installation manual (86 pages) ,
- Installation manual (92 pages)
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Glossary
Rebalance
Rebuild
Restricted MDM Mode
Restricted SDC Mode
RFcache
SDBG
SDC
SDS
Secondary MDM
Single Mode
Slave MDM
Snapshot Capacity
Spare Capacity
Spare Percentage Policy
Standby MDM
Storage Pool
Dell EMC VxFlex Ready Node AMS User Guide
352
When VxFlex OS detects lopsided use of storage capacity, or when new nodes are
added, it redistributes data across the nodes, in order to improve performance.
When VxFlex OS detects a failure in the network, it creates a new copy of the data
from the failed component, in a new location, to ensure data integrity.
A mode set in which commands can only be performed from an MDM machine.
Only approved SDCs can access the MDM. When this mode is enabled, volumes can
only be added to approved SDCs.
Read-only caching of storage devices performed on one or more designated SSD
devices in a VxFlex OS node.
S
The SDBG is a technical support troubleshooting tool, used to investigate for "live"
systems that retrieves internal information from different VxFlex OS components.
Storage Data Client, a lightweight device driver that exposes VxFlex OS volumes as
block devices to the application residing on the same server on which the SDC is
installed.
Storage Data Server, which manages the capacity of a single server and acts as a back-
end for data access. The SDS is installed on all servers contributing storage devices to
VxFlex OS.
See
Slave
MDM.
A single MDM manages the VxFlex OS network. This mode has no backup protection,
and should not be used in production environments.
An MDM in the cluster that is ready to take over the Master MDM role if ever
necessary.
The amount of capacity occupied by snapshots of volumes.
Capacity that is reserved for system use, when recovery from failure is required. This
capacity cannot be used for storage purposes.
This policy determines the amount of capacity that must always be reserved as free
space.
An MDM node that is ready to use, with an ID, that has been locked to a specific VxFlex
Ready Node system.
A sub-set of physical storage devices in a Protection Domain. Each storage device can
only belong to one Storage Pool. User volumes will always use the storage of a single
Storage Pool.
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- Introduction to Vxflex Ready Node
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